A(n) ____ can be connected to measure the velocity pressure of the air moving in a duct.
A. ammeter
B. manometer
C. pyrometer
D. speedometer
Answer: B
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The force F goes through the origin of the xy-coordinate system and makes an angle ???? with the horizontal, as shown in Figure 12.25. Points A and B are at the coordinates indicated on the figure in units of feet. Calculate the moment of F about points A and B, assigning positive values to counterclockwise moments.
F = 2.4(10)³ lbf
???? = 270°
 FIGURE 1.png)
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A) Wood B) Cement fiber board C) Panel D) Vinyl